
UDP ports 3478 through 3481 outgoing from clients that will use Teams.TCP ports 80 and 443 outgoing from clients that will use Teams.At a minimum you should make sure that the following common ports are open to the internet from your users' locations: To scale meetings across your organization you should ensure that all user locations have internet access to connect to Microsoft 365. To get the best experience on Teams, your organization must have deployed Exchange Online and SharePoint Online, and you must have a verified domain for Microsoft 365 Review the following information and make any required changes to your environment as needed. Meetings and conferencing prerequisitesīefore scaling your meetings deployment across your organization, take time to review and confirm that your environment is ready to provide users with the best The second group includes the additional settings you may want to configure, based on your organization's needs. We've split the settings into two groups, starting with the core set of changes you're more likely to make. This article helps you decide whether to change any of the default settings, based on your organization's profile and business requirements, then it walks you through each change.

Teams provides a great out-of-the-box experience for your organization, and most organizations find that the default settings work for them. Meetings and conferencing deployment decisions For details about Teams meetings and conferencing on different platforms, see Teams features by platform.
